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Kaolin Rotary Kiln

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Place of Origin: china
Brand Name: Shanghai Zhongbo Machinery
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Kaolin Rotary Kiln

Rotary kiln of internal heating type is widely used in medium temperature calcining superfine kaolin and the technology has been mature, advanced, representing the development direction of ultra-fine kaolin calcining technology. The rotary kiln calcination technology is characterized by low energy consumption, high yield, stable performance and after dehydration,decarbonization the kaolin will be whitened,too.

Rotary calcined kaolin has becomes the essential mineral raw materials in dozens of industries such as paper making, ceramics, rubber, chemicals, paints, pharmaceuticals, and defense industries. Rotary kiln calcining makes kaolin's applications more extensive.Some high-tech fields began to make extensive use of kaolin as a new material, and even nuclear reactors, high heat resisting porcelain parts of shuttle and spacecraft , are also made ​​with kaolin.

Rotary Kiln calcining

Kaolin calcining is the process of endothermic, decarbonization, dehydration, heat, phase transformation.Internal heating type rotary kiln of calcining , is essentially that when the calcining kaolin reached a temperature of exothermic peak, in a very narrow temperature range to control its temperature, to make it fully dewatering decarbonization, and does not cause the phase change, to maintain a desired physical properties.Internal heating type rotary kiln temperature calcines kaolin are following the intermediate routes as below: Feeding -- ​​Heating (also quoted the wind) -- dehydration,decarburization-- heat releasing after heat,wind supply-- products quenching.

Process principle of internal heating type rotary kiln in medium temperature calcining superfine kaolin is reliable, advanced, and its principle is most suitable for kaolin exothermic process's response characteristic.There are some ideas that because the flame directly contacts with kaolin, kaolin easy to make mullite phase transition. However, practice has proved that strict control of the calcination temperature and time after kaolin up to exothermic peak, can not only make the kaolin completely dehydrated, decarbonization, whitening, but also no phase change. In essence, the kaolin in excess of exothermic peak temperature range ( 40-800C) will get sufficient reaction, which can achieve complete dehydration, decarbonization whitening.At this point, the implementation quenching on material, reduce or avoid the re-oxidation during slow cooling process, which can effectively stabilize the product of physical and chemical properties, which can not be achieved by an indirect heating method.

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Kaolin Rotary Kiln

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